Efeito da Irrigação Ultrassônica Passiva e do Easy Clean na remoção e extrusão apical de material obturador durante o retratamento endodôntico
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Data
2023-06-16
Tipo de documento
Artigo Científico
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Título de Volume
Área do conhecimento
Ciências da Saúde
Modalidade de acesso
Acesso fechado
Editora
Autores
Hawerroth, Tainara
Orientador
Almeida, Josiane
Coorientador
Resumo
O objetivo deste estudo foi avaliar, in vitro, o efeito da Irrigação Ultrassônica Passiva e do Easy Clean® na remoção e extrusão apical de material obturador durante o retratamento endodôntico. Métodos: Trinta pré-molares superiores artificiais foram adaptados em dispositivos específicos, modelados com limas Reciproc R25 e obturados pela técnica do cone único e cimento AH Plus. Após 14 dias, os canais foram desobturados, reinstrumentados com limas Reciproc R25 e R40, e divididos aleatoriamente em 3 grupos de acordo com o protocolo de irrigação final com NaOCl 2,5% (n=10): G1) Irrigação convencional (IC); G2) Irrigação convencional + Irrigação Ultrassônica Passiva (PUI); e G3) Irrigação convencional + Easy Clean (EC). Em seguida, os dentes foram clivados longitudinalmente no sentido vestíbulo-palatal e observados em estereomicroscópio. A área de material obturador remanescente no canal radicular e istmos foi mensurada em mm2 com auxílio do software Image J. Os dispositivos, contendo ou não material obturador que extruiu apicalmente, permaneceram em uma estufa a 70°C por 5 dias para evaporação da solução irrigadora e posterior pesagem. Os dados foram analisados por meio dos testes One way ANOVA e post hoc Tukey, e Kruskal-Wallis e post hoc Dunn (α = 5%). Resultados: O protocolo de irrigação final PUI foi eficaz na remoção de material obturador remanescente e proporcionou melhor limpeza dos canais radiculares (P = 0,007) e das regiões de istmo (P = 0,045), quando comparada com IC. Quanto à extrusão apical de material obturador, não foi observada diferença significativa entre os grupos (P > 0,05). Conclusão: O protocolo de irrigação final PUI promoveu melhor limpeza dos canais radiculares e das regiões de istmo durante o retratamento endodôntico. Ambos os protocolos extruíram quantidades semelhantes de material obturador.
The aim of this study was to evaluate, in vitro, the effect of Passive Ultrasonic Irrigation and Easy Clean® on the removal and apical extrusion of filling material during endodontic retreatment. Methods: Thirty artificial maxillary premolars were adapted in specific devices, modeled with Reciproc R25 files and filled using the single cone technique and AH Plus cement. After 14 days, the root canals were unfilled, re-instrumented with Reciproc R25 and R40 files, and randomly divided into 3 groups according to the final irrigation protocol with 2.5% NaOCl (n=10): G1) Conventional irrigation (CI); G2) Conventional Irrigation + Passive Ultrasonic Irrigation (PUI); and G3) Conventional irrigation + Easy Clean (EC). Then, the teeth were longitudinally cleaved in the vestibulopalatal direction and observed under a stereomicroscope. The area of filling material remaining in the root canal and isthmus was measured in mm2 with the help of Image J software. The devices, whether or not containing filling material that was extruded apically, remained in an oven at 70°C for 5 days for evaporation of the irrigating solution and subsequent weighing. Data were analyzed using One way ANOVA and post hoc Tukey, and Kruskal-Wallis and post hoc Dunn tests (α = 5%). Results: The final irrigation protocol PUI was effective in removing remaining filling material and provided better cleaning of root canals (P = 0.007) and isthmus regions (P = 0.045), when compared to CI. As for the apical extrusion of filling material, no significant difference was observed between groups (P > 0.05). Conclusion: The PUI final irrigation protocol promoted better cleaning of root canals and isthmus regions during endodontic retreatment. Both protocols extruded similar amounts of filling material.
The aim of this study was to evaluate, in vitro, the effect of Passive Ultrasonic Irrigation and Easy Clean® on the removal and apical extrusion of filling material during endodontic retreatment. Methods: Thirty artificial maxillary premolars were adapted in specific devices, modeled with Reciproc R25 files and filled using the single cone technique and AH Plus cement. After 14 days, the root canals were unfilled, re-instrumented with Reciproc R25 and R40 files, and randomly divided into 3 groups according to the final irrigation protocol with 2.5% NaOCl (n=10): G1) Conventional irrigation (CI); G2) Conventional Irrigation + Passive Ultrasonic Irrigation (PUI); and G3) Conventional irrigation + Easy Clean (EC). Then, the teeth were longitudinally cleaved in the vestibulopalatal direction and observed under a stereomicroscope. The area of filling material remaining in the root canal and isthmus was measured in mm2 with the help of Image J software. The devices, whether or not containing filling material that was extruded apically, remained in an oven at 70°C for 5 days for evaporation of the irrigating solution and subsequent weighing. Data were analyzed using One way ANOVA and post hoc Tukey, and Kruskal-Wallis and post hoc Dunn tests (α = 5%). Results: The final irrigation protocol PUI was effective in removing remaining filling material and provided better cleaning of root canals (P = 0.007) and isthmus regions (P = 0.045), when compared to CI. As for the apical extrusion of filling material, no significant difference was observed between groups (P > 0.05). Conclusion: The PUI final irrigation protocol promoted better cleaning of root canals and isthmus regions during endodontic retreatment. Both protocols extruded similar amounts of filling material.
Palavras-chave
Extrusão apical, Irrigação ultrassônica passiva, Retratamento endodôntico